Air conditioners have fixed frequency and inverter, what is the difference between them?

The main difference between inverter air conditioner and fixed-frequency air conditioner is that the compressor is fixed-frequency, which can only run at one speed, and then the outdoor fan motor, as well as the indoor stepper motor, etc., are also fixed-frequency, all of which are at the same speed, and the temperature reaches the set temperature, stop running, and the temperature is lower than a certain temperature and restart, so that the main problem is that the temperature will be high and low, and then the motor noise that keeps starting and stopping is also relatively large.

With the cooperation of a good algorithm and the electronic expansion valve of the throttling element, after the temperature is reached, the compressor and various motors will not stop the frequency reduction, the low frequency is more stable, the temperature control is more accurate, and it can be accurate to the degree now, to know why people feel hot and cold, because the temperature of the human body is more than one degree is very obvious.

And the mute effect is very good when the frequency is reduced, sometimes you don't know that the air conditioner is still on, and the experience comfort is very high!

Is it better to buy an air conditioner with inverter or fixed frequency? Understand the difference between inverter air conditioner and fixed frequency air conditioner in one minute!

Fixed frequency is how many degrees you adjust, he will always be set at how many degrees, will not change, and frequency conversion is that the temperature you adjust rises to a certain height, it will be adjusted down by itself, to maintain a constant temperature in the room.

The use of fixed-frequency air conditioning is linked to the surrounding environment, when the ambient temperature is low, the fixed-frequency air conditioner will operate slowly, and vice versa. Inverter air conditioners can adjust the speed according to the surrounding environment, which is a little better than fixed frequency, but now inverter cannot replace fixed frequency air conditioners.

Inverter air conditioner is more energy-efficient than fixed-frequency air conditioner, but it is also a little higher than fixed-frequency air conditioner, but in the long run, it is more worthwhile to buy inverter air conditioner, if the budget is limited, you can consider buying Haier air conditioner, the price is higher, and a cheaper inverter air conditioner can be bought for about 2,000 yuan.

1. Inverter air conditioner has good comfort.

The comfort is reflected in the three points of high stability at room temperature, fast refrigeration and heating speed, and strong low-temperature heating capacity.

2. The stability of the room temperature of the inverter air conditioner is high.

Fixed-speed air conditioner uses the start and stop to adjust the room temperature, the temperature control range is 2, and the room temperature fluctuation range is large, people will feel uncomfortable and easy to get "air conditioning disease". Inverter (variable speed) air conditioner runs at high speed at the beginning, and when the room temperature reaches the set temperature, it turns to low-frequency work, the temperature control is accurate, and the temperature control range is in, because the room temperature is stable, people feel comfortable. It is especially suitable for the elderly and children to use while sleeping.

3. The refrigeration and heating speed of inverter air conditioner is fast.

Inverter (variable speed) air conditioner runs at the maximum frequency after starting, the frequency can reach more than 130Hz, and the refrigeration and heating capacity is 2 3 times that of the fixed speed machine (50Hz), so that the cooling or heating rate of the room is 1 2 times faster than that of the fixed speed air conditioner. It allows people to quickly obtain a comfortable temperature environment.

4. Inverter air conditioner has strong low-temperature heating capacity.

In winter, if the ambient temperature is very low, the heating capacity of the air conditioner will be greatly reduced because the air conditioner will defrost frequently. On the one hand, the inverter (variable speed) air conditioner can enhance the heating capacity by increasing the frequency during the non-defrosting period, and on the other hand, during the defrosting period, the high-frequency operation defrost is adopted, so that the defrosting time is greatly reduced, and the room temperature change during defrosting is reduced from about 6 to about 2 of the fixed speed machine. As a result, comfort is greatly improved.

5. Inverter air conditioner has good energy saving.

Inverter (variable speed) air conditioners run at the maximum frequency after starting, and when the room temperature reaches the set temperature, they switch to low frequency operation, because the energy efficiency ratio is high when operating at low frequencies, and compared with fixed speed machines, it can achieve significant energy savings. According to the comparative test data of a DC inverter (variable speed) machine with a cooling capacity of 2800W and a fixed speed machine of the same capacity.

At 8 minutes, the cumulative power consumption of the inverter (variable) machine is twice that of the fixed speed machine; In about 40 minutes, the cumulative power consumption of the inverter (variable) machine and the fixed speed machine is the same; At 180 minutes (3 hours), the cumulative power consumption of the inverter (variable) machine is only that of the fixed speed machine. That is, in 3 hours, the cumulative power consumption of the inverter (variable) machine is less than that of the fixed speed machine.

If there are elderly people, children at home, or families who often turn on the air conditioner for a long time, it is recommended to choose an inverter air conditioner. The elderly and children in the family are sensitive to temperature changes, and if the temperature changes too much, there is a risk of catching a cold. Inverter air conditioners can better control the indoor temperature and will not let the indoor temperature change too much, so the comfort is also better.

And if the air conditioner is turned on for more than ten hours a day, the inverter air conditioner is more energy-saving. Ordinary families are recommended to choose fixed-frequency air conditioners, the probability of failure is relatively low, and it is also relatively cheap. The basic structure and refrigeration principle of inverter air conditioner are exactly the same as those of ordinary air conditioners.

The host of the inverter air conditioner is automatically continuously variable speed, which can automatically provide the required amount of cold (heat) according to the room situation; When the indoor temperature reaches the desired value, the air conditioner unit will operate at a constant speed that can accurately maintain this temperature, so as to achieve "non-stop operation", so as to ensure the stability of the ambient temperature.

Compared with fixed-frequency air conditioners, inverter air conditioners consume more electricity: because inverter air conditioners are continuous and consume a lot of electricity, fixed-frequency air conditioners are relatively controlled by manual control and are more stable; The technology of inverter air conditioner is relatively not very perfect, so there are still some problems in many cases, and fixed-frequency air conditioner is relatively stable; In terms of practical life, inverter air conditioners are also relatively right, so it is more practical to use fixed-frequency air conditioners in general.

The inverter air conditioner has added an inverter that can be used to adjust the compressor speed than the ordinary air conditioner, and the speed of the inverter air conditioner compressor will slow down according to the decrease in the indoor temperature, while the ordinary air conditioning compressor has been running at the maximum speed, so under certain circumstances, the inverter air conditioner is more energy-saving than the ordinary air conditioner.

Compared with inverter air conditioners, fixed-frequency air conditioners do not have inverter air conditioners, and they are not easy to operate in many public places or large-scale occasions; Fixed-frequency air conditioners are used at the national standard voltage of 220 volts and 50 Hz, so the general unstable voltage will also affect the use of air conditioners.

1.The biggest difference between inverter and fixed-frequency air conditioner is that the product is used differently on the compressor.

2.The compressor of the inverter product can be moderately adjusted in the case of long-term operation.

3.When there is no need for a large amount of heat and cold, the inverter air conditioner will run at a low frequency and can maintain a constant temperature.

4.Fixed-frequency air conditioners need to be turned on and off under artificial conditions.

1.The difference between frequency conversion and fixed frequency.

1) Refrigeration and heating speed: The compressor of inverter air conditioner has strong operating capacity, and the refrigeration or heating speed is relatively fast. The traditional fixed-frequency air conditioner will be a little weaker.

2) Energy saving: The biggest advantage of inverter air conditioning may be energy saving. Air conditioning has always been a very power-hungry appliance, and it was often said that it was unaffordable to buy it. After the introduction of inverter air conditioners, a lot of electricity can be saved.

3) Constant temperature: If the temperature of the fixed-frequency air conditioner is not adjusted well, it will feel overheated or too cold. The inverter air conditioner can maintain the temperature that the indoor human body is accustomed to. Energy efficient and environmentally friendly.

2.Inverter air conditioner features: Inverter air conditioner can automatically adjust the temperature according to the indoor temperature.

When the temperature in the room reaches the temperature you set, the air conditioner will run at a rate that can maintain the temperature in the room. This saves some of the electricity. Fixed Frequency Air Conditioner Features:

Fixed-frequency air conditioners will not run at a constant temperature like inverter air conditioners, but will always be on. If the air conditioner is turned on for a long time in summer and then turned on and off, it will consume more electricity.

First, the principle

Inverter air conditioner is based on ordinary air conditioner, which selects a special compressor for inverter, and adds a variable frequency control system. After the inverter technology is applied to the air conditioner, the speed of the compressor motor becomes different, so that the amount of compressed refrigerant of the compressor is variable, and then the speed and amount of refrigerant circulation are variable, and the final result is that the cooling capacity or heating capacity is variable and the temperature control is more accurate.

The domestic power grid voltage is 220 volts and 50 Hz, and the air conditioner that works under this condition is called "fixed frequency air conditioner". Because the power supply frequency can not be changed, the compressor speed of the traditional fixed-frequency air conditioner is basically unchanged, relying on its continuous "start, stop" compressor to adjust the indoor temperature, which is easy to cause the room temperature to be cold and hot between opening and stopping, and consumes more electric energy.

2. Power consumption

Most manufacturers now regard power saving as the biggest selling point of inverter air conditioners, but after the actual experience of many consumers, they find that the power saving effect is not as good as the manufacturer advertises. The reason is that the data advertised by the manufacturer is done in a laboratory with more restrictive conditions, which is quite different from the scenario we actually use. However, compared with fixed-frequency air conditioners, inverter air conditioners will still be more energy-efficient, and the longer they are used, the more obvious the power-saving effect will be.

3. Fees

Even if it is calculated according to the power-saving capacity advertised by the manufacturer, it will take about 5-10 years to make up for the difference between the inverter air conditioner and the fixed-frequency air conditioner through the saved electricity bill. Therefore, the significance of power saving of inverter air conditioners lies in environmental protection and energy saving, not in saving money.

Fourth, maintenance and failure rate

Since the current maturity of inverter technology is still not as good as that of fixed-frequency technology, the failure rate of inverter air conditioners of the same brand and series is often several times that of fixed-frequency air conditioners, and it will be slightly more expensive than fixed-frequency air conditioners during maintenance. When you buy inverter air conditioners, you should choose the main products of big brands as much as possible, so that product quality and after-sales service can be better guaranteed. However, with the rapid development of the industry, it is the mainstream trend for frequency conversion technology to surpass fixed frequency technology, and we don't have to worry too much.

5. Accuracy of temperature control

The biggest feature of inverter air conditioner is that it is more comfortable than fixed-frequency air conditioner. Because the fixed-frequency air conditioner cannot control the cooling capacity, it can only control the room temperature through the "on, off" compressor, so it is easy to cause the indoor temperature to rise and fall, and the general temperature fluctuation range is up to 4 °C, and the human body will feel uncomfortable because of the fluctuation of indoor temperature. The inverter air conditioner can maintain the indoor temperature within 1°C by adjusting the speed of the compressor motor.

6. Noise

Due to the different principles, the fixed-frequency air conditioner cannot adjust the compressor speed, so the noise of the outdoor unit is also fixed. The inverter air conditioner will increase to the maximum speed to cool down quickly when it is first started, and then it will always run at a low speed, so the noise will be lower than that of the fixed frequency air conditioner.

7. Applicable scenarios

If it is used in development areas such as living rooms and canteens, you can choose fixed-frequency air conditioners. Because these areas are not sensitive to temperature fluctuations, they can be used for a short time. If it is used for personal space such as rooms and study rooms, it is recommended to choose inverter air conditioners, because they can get better comfort.

The difference between inverter and fixed-frequency air conditioner: The biggest difference between inverter and fixed-frequency air conditioner is that the application principle of the product on the compressor is different.

The host of the inverter air conditioner is automatically continuously variable speed, which can automatically provide the required amount of cold (heat) according to the room situation to ensure the stability of the ambient temperature.

Fixed-frequency air conditioning is China's power grid voltage of 220 volts, 50 Hz, the air conditioning working under this condition is called fixed-frequency air conditioning, the compressor speed of the traditional fixed-frequency air conditioner is basically unchanged, relying on constantly"On, stop"The compressor adjusts the room temperature and consumes more electricity.

The difference between inverter and fixed frequency: The biggest difference between inverter and fixed frequency air conditioner is that the application principle of the product on the compressor is different. If the compressor of the inverter product can be moderately adjusted in the case of long-term operation, if the indoor does not need a lot of cold and heat, the air conditioner will run in a low-frequency state, intelligent constant temperature control, and the fixed-frequency product needs to be adjusted on and off the cold and hot of the air conditioner under artificial circumstances.

Inverter air conditioner is under the control of inverter module, the compressor speed can be fast or slow, so the cooling capacity or heating capacity of the air conditioner can also be large or small, fast or slow, when the air conditioner is just turned on, the inverter air conditioning compressor is in a high-speed state, so the cooling capacity or heating capacity is very large, so that the indoor temperature quickly reaches the set temperature; When the room temperature reaches the set temperature, the compressor is in a low-speed operation state, and the cooling capacity or heating capacity is very small, and the power consumption is very small, so as to maintain the indoor temperature unchanged. Therefore, the cooling or heating speed of inverter air conditioner is fast, the indoor temperature difference is small, the comfort is good, and the long-term reasonable use can give full play to its power-saving characteristics. Inverter air conditioners are especially suitable for use in bedrooms or rooms with long power on periods of time.

However, the structure of inverter air conditioners is relatively complex, so the manufacturing cost is high, and the installation must also be vacuumed, and the maintenance cost is also very high.

The compressor speed of ordinary fixed-frequency air conditioner is always the same, so the cooling capacity or heating capacity is also the same, it is to maintain the indoor temperature within a certain range by controlling the start and stop of the compressor, so the indoor temperature difference is large and the comfort is poor. However, its structure is relatively simple, the manufacturing cost is low, and the maintenance cost is relatively small. It is especially suitable for rooms where the boot time is not very long, or the indoor temperature difference is not high.